Ball-beabino



JOHN NIEWMANN, 0F BROOKLYN, NEW YORK.

BALL-BEARING'.

Specification of Letters Patent.

Patented May 13, 1919.

Application led'lAugfust 8, 1918. Serial No. 248,8'5i2. y

To all whom t may concern.'

Be it known that; `I` Joran NEWMhNN?, a citizen of the Unlted Eitates of America, re-

. sidin at Brooklynin. the county of Kings and tate of New ork, have invented cer tain new and useful Improvements in Ball- Bearings, of which the following is `a speedication.

The present invention relates to ball bearings particularly of the class which cages gre employed for holding and separating the alls.

The` principal object of my invention is to provideI an extremely simple, practical and inexpensive construction of a cage for a sin le, double or multiple ball bearing.

other object of my invention is to provide a construction :of a cage which can be used either for a double or triple ball bearing.y

Other objects will be rendered clear from the following detailed description of the inventina.

In the accompanying drawing which forms part of this specification and in which similar reference characters denote correspond ing parts Figure 1 is a longitudinal section of a part of a tripleball bearing showing two cages-each'constructed according to the present invention; Fig. 2 is a cross section through one of the cages shownvin Fig. 1 on a reduced scale; Fi s. 3 and 4 are enlarged longitudinal sections through the inner and outer parts or rings composing the new cage; Fig. 5 is a similar section of the two parts assembled in which the inner ring is slightly modicfied 'in construotion; Fig. .6 isa perspectlve view of a part of the said modiiied inner ringA and Fig- 7 is a longitudinal section of the two shells of` the cage disassembled and each still further modied in construction.

Referring more specifically tothe drawing -andparticularly to Fig; l, the bearing com rises` `an outer shell or icone a, inner shels or cones b, crd, and balls e, f, g. The ontershell is prodebon.y its inner circumference with uninterrupted annular grooves or races of, *asiat (meier each Set riballa each meer( bei fof circulan cross section,V In order to. al" w of. the middle `row of lballs being easily and conveniently assembled within thea central race as?,l the latter isl arranged out of alinement With the endraces, that .is to say somewhat deeper or more toward thev center of the shell as shown in Fig. 1 Vand the end shoulders a of the races a',` a2 are out away as shown. The inner shellsv or cones are similarly formed with annular grooves of circular cross section b.l`

l l o (Z the inner shoulders of each end cone b and d; being cut .away so that from the deepest point of their races to the inner edges thereof even cylindrical surfaces are formed.

The middle or central shell or cone c is inserted into the bearing `before any of the rows of yballs e, f, g are assembled and tol enable the assembling of the balls f, the middle shell c is, according to the Well knownmethod, displaced` into eccentric `position relative to the axis4 of the outer shell and subsequently restored to its eccentricposi' tion Upon the assembling of the' central row of balls, the latter are spaced apartV ac- -cord-ing tothe construction of the spacers or cages forming the subject matterof my invention. An assembling of themiddle row of balls may also be obtained by other well known methods.

-Thus far the construction is well known and does not form part ofmy invention.

My new spacer or cage substantially consists of two interengaging ring shaped bodies h, z', each one preferably madeof sheet metal and provided withperforations It', i punched out so as to, form spherically curved flangesl projecting in opposite directions from the rin bodies and around said perforations. While the perforations of the outer ring are full circles,v the perforations z" of the inner ring are sen1i'ci1-cular,4 and the material on one side of the said perforations- 1 To interlookthe tworings when assembled, the outen ring may, at one ot its circumferential edges, be provided with one or several projections` ita (Fig,-y 4) capable of being bent compressed, aroundthecornespond ing edge of the inner ring so as to securely lock the rings together.

To allow of the assembling of the two rings and the balls therein, the inner ring may be split transversely as at s so that after the insertion of the balls into the perforations h of the outer ring from the inside thereof the inner ring z' may be somewhat compressed after the separation of the edges at the incision and inserted into the Space formed by the outer ring so as to engage the balls,'whereupon the inner ring may be again expanded until its edges at the incision are restored to normal position.

' The splitting of the inner ring is, however, not absolutely necessary. The ring being made of sheet metal is more or less flexible and can be easily bent so as to allow of its insertion into the outer ring and its enga ement of the balls.

heV cage constructed according to the aforesaid description is complete fora sin gle ball bearing.

For a double ball bearing or a ball bearin with more rows of balls, such as the triple ball bearing shown in Fig. 1, the cage ma be modified as follows:

he outer ring 7L may be formed at one of its circumferential edges with a conically shaped flange y', the surfa-ce of which is arranged at an angle of about 45 to that of the circumferential surface of the outer ring. This conical surface or flange j is rovided with a number of semicircular per orations j equidistantly distributed on the circumference of the sai-d flange and which have their center on the vfree edge of thevconical flange, thus forming semicircular indentation's of a diameter equal to that of the balls they are to engage as for instance the central row of balls f 1n the ball bearing shown in Fig. 1. It will be remembered that with the ball bearing cf the construction shown in Fig. 1, the balls f are assembled between the shells a and c by the displacement of the inner shell c into eccentric position and its subsequent restoration to concentric position. After the insertion of one of the end cages 7L, j, the middle row' of balls f can be spaced s0 as to engage the semicircular cavities or openings j in the conical flange j whereby they will be held in the adjusted position. The conical flange may be made long enough to extend to a point near the bearing points of the balls. If the ball bearing is to comprise only tworows of balls, one of the cages just described would be sufcient to' space the two rows of balls. But for a triple ball bearing a duplicate of the cage L, z'., y' can be used, which is inserted into the ball bearing and arranged in a reversed position relative t0 that of the other cage, so that the two conical flanges j, j will both engage the middle row of balls from different sides and thus insure a more per- -complete circles and a transversal incision 5 (Fig. 6) made to extend from one side of said perforations to the corresponding edge of the ring so that at that side of the perforation the metal around the perforation can be bent open to permit the passage of the ball and thereupon bent back to engage' around the ball, whereby the, separation of the two rings L, z' will be prevented.

To facilitate the bendin of the material around the perforations z' lateral angular and short incisions 6, 7 and notches or furrows 8 are provided (F ig. 6). When it is considered that no strain is exerted on the walls of the perforations receiving the balls and that the flaps 9 formed by the incisions 5, 6 and 7 are bent rarely or only once, at the insertion of the balls, then the weakenlng of the material by the furrows s and the incisions 5 and 7 will be found to be unobjectionable.

To facilitate the assembling of the parts of perforations are circular the flanges will be also complete circles in cross section and in case of semicircular perforations the flanges will be of semicircular cross section as shown in Fig. 7.

`When providin flaps shown in Fig. 6, the perforations willgbe first punchedout with the spherical flanges to extend all around the perforations and subsequently the incisions 6, 7. s will be made so that each of the flaps 9 Iwill be formed with a part of the spherical flange which, when closed, will engage around the balls.

In the form shown in Fig.y 7 the two rings may be joined together by-providing, at one end of the outer ring, an annular centrally bent rim or flange 71,5 and at the opposite end projections 7b4 whioh,fup0n the engagement of the inner ring, could be bent around the corresponding edge lof nthe latter just like the projections h3 shown in Fi 4. Instead of that, however, two or more o the perfora-v tions vin the inner and outer rings or in one of them may be vmade in form of full circles m1 epevlided'wilh thepincisions'just like 5,1

' l 151,1 andffurrowswin order to rform theflaps mall-,Maut is: n

.kvsh'own "iiivFigi 6 which,v after `.the parts'are "assembleds, canfbe n bent to engage .around theballsfand vtherebylock the/latter 1n posi- "'""ti'onand the .two ringsetogether. f f ,p i desire to secure by Let-` 'Wha't-"I claim and outerv and inner shells having annular nony interrultedfgroovesfforming races, of a cage' folthey y p `:v ringsformed'wit circularl'y shaped sockets y throur h which thejballs protrude outwardly and i alls com osed of two interengagmg l ving'v rims or anges projecting around.' the said sockets and in oppositey d1,-

outer kandlinner shells having annular Anonfor the-balls `composed of two interengagmg j rings each formed with perforations. the

" of. thefbsaidll ring, andv having spherica y shaped rims y,or

' interrupted grooves forming races, of a cage y `for'the balls composed of two pliable inter# j;k 2engaged ring shaped members each punched" -j "'out'so .fas-toiform recesses surrounded by i @oplei this petentjmay be obtained for-I `perforationi-s of one of the rings being in form of. fullcircles and thoseof the otherl'ring beingl semicircular and open towardonev ed e flanges surrounding'sald orations. j "l i 3. In 'afballbearing, the combination with outer and inner shells having annular noninterrupted grooves forming races, of acage for the balls composed of two pliable inter-` 'engaging rin shaped members eachformcd I' withfs'pherica ly shaped outwardly o enballv socketsfprotruding from said mem, rs in Fosite directions and through which' the 1s roject outwardly.

outer, and inner shel having 4annular-non,-

sghericallyl shaped rims protruding from lt `e said members in oppositedirections and as. ball sockets. p

,the combination with 1*. `jIna`y ball bearing,y the-combination with.y j

ivev cent each, by vaddi-annif3the"Gozanuleieaer ot latenti.. Wuhingtonlllhc." v '1 flaps; capable ,l

f they passage -o .balls when closed 'tojiloc in passembledT-postion.

, 6. Inafmultip'le ball p rising two interengaged. ring sha liars-formed w'th Vsockets. for`v one-row'. i balls,vone of the said being.: formed f with a conical exten having.' fon a second row-of bak 7. In'a'multi le prising ltwo y shaped members in ball sockets arejp balls and' of' which f formed' withy amar'gmal eirtension'fha'.ving1k sockets-for a secondjset of balls. l

8. In a multiple ball bearing, aca com posed ofy two interengaging pliab e shapedmembersfhaving sockets foi-ione se l of balls andoffwhich one oflthe' "meniy bershas'a marginal conical'extension av'ing socketsffor a secondrow olliballs;l 5*' ,l i

` 9. In a ballbearinggfthecombination-with three'sets of balls; o vtwo cagesarrangedin l" reverse direction relative'toone another,y each cage lbeing composed of two 1 interengaged i rin s formed with ysockets for theend se of kalls, and ofxwhich one` of vsaid membe has a rmarginal inwardly directed extension loiisned-withsockets'for the central setof 10. In a` ball" bearing, the combinatio with threesetspof bal1sof-twofcagesar rangedA in reverse'directlon relative to one? another, each cage :i being composed ofvtwo interengagedA rings formed with sockets lfor y f, the end sets `of balls, and of whichone of n'a ball bearin the combinationwith said membersy has a'ifmarginall inwardlyy `difrected conical extension-formedwith soc for the central set of balls.

l1. A cageifor ball 'bearings co two interengagedfpliable rings ji which,perforationsarefpunched out tufo sphericall v curved f flangesy protruding fromv saidy mem ers around `said rforations, the `flangesof'saidy membersfbelng directed in` l opposite directionsand means'y for. ocki saidy rings. togethelxfv y y 1 vIn ytestir'non'y whereof y sigl'iatu in presence of! a witness.`

' JOHN 

